1782334 Probe As-Liquid Level Fits Caterpillar Models

One New Aftermarket Replacement Liquid Level Probe (Water Separator Sensor) for Caterpillar (Cat) Excavators, Off-Highway Trucks, Track Loaders, and More

This liquid level probe assembly serves as the water-in-fuel detection sensor mounted on the fuel/water separator bowl. It monitors water accumulation in the fuel system and signals the operator when water levels require draining, protecting the engine's fuel injection components from contamination. This part is cataloged by Caterpillar (Cat) as a Probe As-Liquid Level and also widely identified as a Water Separator Sensor across aftermarket sources.

Compatible Models

Caterpillar Excavators (C, D, and E Series): 311D LRR, 312D, 312D L, 313D, 314D CR, 314D LCR, 315D L, 318D L, 319D, 319D L, 319D LN, 320C, 320C L, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321D LCR, 322C, 322C FM, 323D, 323D L, 323D LN, 323D S, 323D SA, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325C, 325C FM, 325C L, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L, 329D LN, 330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336E, 336E HVG, 336E L, 336E LH, 336E LN, 340D L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L VG, 365C, 365C L, 365C L MH, 374D L, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L

Caterpillar Wheeled Excavators: M325C MH, M325D L MH, M325D MH, M330D, W345C MH

Caterpillar Off-Highway Trucks: 770G, 770G OEM, 772G, 772G OEM, 773G, 773G LRC, 773G OEM, 775G, 775G LRC, 775G OEM, 777G, 793F, 793F AC, 793F CMD, 793F OEM, 793F XQ, 795F AC, 795F XQ, 797, 797B, 797F

Caterpillar Wheel-Type Loaders: 966K, 972K, 980K, 980K HLG

Caterpillar Track Loaders: 953D, 963D, 973D

Caterpillar Mobile Hydraulic Power Units: 323D L, 323D LN, 324D LN, 325C, 325D, 325D L, 329D L, 330C, 330D, 330D L, 336D L, 336E, 336E HVG, 345C L, 349D L, 349E, 365C L, 385C, 385C L

Caterpillar Pipelayers: PL61

Caterpillar Track Feller Bunchers: TK1051

Caterpillar Forest Products / Loggers: 322C, 345C

Caterpillar Front Shovels: 385C

Caterpillar Shovel Loggers: 345C

Caterpillar Pipelayers: 568 FM, 568 FM LL

Replaces Part Number(s):

1782334, 178-2334, 178-2334-00, 178233400

New aftermarket replacement part - not remanufactured, not used.